Classic Sudoku
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About Classic Sudoku
Classic Sudoku is a puzzle game featuring sudoku puzzles assembled by Cracking The Cryptic hosts Simon Anthony and Mark Goodliffe, along with other authors whose puzzles have appeared on the channel. The puzzles range across difficulty levels and call for a range of solving techniques. More advanced puzzles are designed to highlight difficult techniques and help you understand the patterns involved.
Puzzles and progression
The game begins with 40 puzzles. You start with zero stars and earn stars by solving puzzles; as you earn more, additional puzzles become available. Five new levels are added each month for the first year, bringing the total to 100 levels.
The puzzles are play-tested by people, with attention to the solving journey. Hints written by Mark and Simon are also available.
Frequently asked questions
The best price for Classic Sudoku is $4.99 at Steam. 3 shops have an offer that activates in your country.
Some are. This page only shows offers that activate in your country; offers for other regions, or with no stated region, are left out. To see the offers for another country, change your country at the top of the page.
Every key we list activates on Steam. Redeem the key there and Classic Sudoku stays in your library for good.
Yes, with a small risk. Publishers create keys to sell in other shops, which is why a key can cost less than in the official store, and once you activate it the game is yours to keep, just like a store purchase. On average 1–2% of keys fail, so check the shop's buyer protection before you buy: the official store does not refund keys bought elsewhere.
The minimum requirements for Classic Sudoku are: Windows 7, Intel HD Graphics 3000, Intel Core i3, 1 GB RAM, 70 MB storage. It also runs on macOS. The recommended specs are in the System requirements section.
No. Classic Sudoku is a single-player game.
Mostly, yes. Valve rates Classic Sudoku as Playable on the Steam Deck: it runs, but may need some manual setup.
Steam lets publishers create keys to sell in other shops. Once you activate a key, the game is yours to keep, just like a store purchase.
Disclaimer: CD keys have an inherent 1–2% average failure rate. Check the shop terms for buyer protection info. Steam offers no buyer protection for keys bought in other shops and doesn't refund them.
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